Sony MDX-C8970 Service Manual page 48

IC805 MBM29F800TA
A15
1
A14
2
A13
3
X
A12
4
DECODER
A11
5
A10
6
A9
7
ADDRESS
A8
LATCH
8
Y
DECODER
9 NC
10 NC
STB
WE
CONTROL
11
CIRCUIT
RESET
12
13 NC
14 NC
RY/BY
15
A18
16
A17
17
A7
18
RY/BY
A6
BUFFER
19
A5
20
A4
21
A3
22
A2
23
A1
24
IC871 TL1451ACDB-E20
16 15 14 13
VERF.
+2.5V
VCC
–
+
REFERENCE
VOLTAGE
ERROR
AMP2
+2.5V
SHORT
CIRCUIT
VERF
VERF
PROTECTION
COMPARATOR
+
+
–
S R
LATCH U.V.L.O
VREF/2
TRIANGLE
OSCILLATOR
1 2 3 4
48
8,388,608
CELL
MATRIX
Y GATE
I/O
BUFFER
DATA
LATCH
STB
LOW VCC
DETECTOR CIRCUIT
WRITE/ERASE
PULSE TIMER
WRITE CIRCUIT
ERASE CIRCUIT
CHIP ENABLE/
OUTPUT ENABLE
CIRCUIT
12 11 10
PWM
COMPA-
RATOR2
VERF
OUTPUT2
OUTPUT1
R
PWM
COMPA-
RATOR1
+
–
ERROR
AMP1
5 6 7
A16
48
BYTE
47
GND 46
DQ15/A–1
45
DQ7
44
DQ14
43
DQ6
42
DQ13
41
DQ5
40
DQ12
39
DQ4
38
VCC 37
DQ11
36
DQ3
35
DQ10
34
DQ2
33
DQ9
32
DQ1
31
DQ8
30
DQ0
29
OE
28
GND 27
CE
26
A0
25
9
GND
8